논문 상세보기
Reinforced concrete (RC) columns exhibit cyclic damage, such as strength degradation, under cyclic lateral loading, such as earthquakes. Considering the cyclic damage, the nonlinear load-deformation response of RC columns can be simulated using a lumped plasticity model. Based on an experimental database, this study calibrates lumped plasticity model parameters for 371 rectangular and 290 circular RC columns. The model parameters for adequate flexural rigidity, plastic rotation capacity, post-capping rotation capacity, moment strength, and cyclic strength degradation parameter are adjusted to match each experimentally observed load-deformation response. We have developed predictive equations that accurately relate the model parameters to the design characteristics of RC columns through regression analyses, providing a reliable tool for engineers and researchers. To demonstrate their application, the proposed and existing models numerically simulate the earthquake response of a bridge pier in a metropolitan railway bridge. The pier is subjected to several ground motions, increasing intensity until collapse occurs. The proposed lumped plasticity model showed about 41% less vulnerable to collapse.
1. 서 론
2. 철근콘크리트 기둥 데이터베이스
3. 집중소성모델 매개변수 보정
3.1 집중소성모델의 재료모델
3.2 모델 매개변수 보정방법
3.3 보정된 모델 매개변수 결과
4. 집중소성모델 매개변수 예측식 제안
4.1 회귀분석 방법
4.2 회귀분석 결과
4.3 제안된 예측식의 검증
5. 교량 교각에 대한 제안된 예측식 적용
6. 결 론
감사의 글
REFERENCES
